<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, initial-scale=1.0">
		<title></title>
		<link rel="stylesheet" href="./Bootstrap4.6.1/css/bootstrap.css">
		<!-- 先引入jquery文件，再引入bootstrap文件 -->
		<script src="./Bootstrap4.6.1/js/jquery.js"></script>
		<script src="./Bootstrap4.6.1/js/bootstrap.bundle.js"></script>
		<style>
			div{
				outline: 1px red solid;
			}
		</style>
	</head>
	<body>
		<div class="container">
			<div class="row">
				<div class="col-3">001</div>
				<div class="col-3 order-md-last">002</div>
				<div class="col-3 col-lg-auto">根据内容填充宽度</div>
				<div class="col-3">004</div>
				<div class="col-3">005</div>
				<div class="col-3 col-lg">自动缩放</div>
			</div>
			<div class="row mt-5">
				<div class="col-3">
					logo图
				</div>
				<div class="col-3 offset-6">
					登录注册
				</div>
			</div>
			
		</div>
	</body>
</html>